Battery.



F. E. SMHH.

BATTERY.

APPLlc/Tmu msu nv/2,1911.

Patente New 29,

Ffm@

FRANK '.BO'WER SMITH, OF MALDE'N, MASSACHUSETTS.

BATTERY.

Specification of Letters Patent.

Patented Non. 2t), 191'?.

Application filed May 1, 191'?. Serial No. 165,7?4.

To all 'whom may concern: 1

Be it known that l, FRANK Bowen Saufen, a subject ol the King of (ire-at Britain, and a resident of the city of Malden, in the county oi" Middlesex and Commonwealth of ltllassachusetts,'have invented certain new and useful improvements in Batteries, of which the following is a Jfall, clear, and exact specification.

rfhe small electric'lights actuated by portable batteries, used by physicians, are open to the objection of frequently getting burned out. This l find .is caused by the nsers coapling the sinallerlamps with the same battery power as the largest lamps. To prevent this, l have devised a battery containing several dry cells and so connected with a resistance as to enable the power to be instantly varied to snit the laInp to be used.

Referring, to the drawings forming part ot` this specification, Figure il is a perspective view of a battery embodying my improve ments. Fig. l is a plan vieW of the saine. Fig. 3 is a section of the battery through XMK in Fig, 2. Fig. l is a detail view o the rheostat employed.

The battery case 1 is provided with a hinged cover 2 and a suitable locking device, as the hook 3. `Near one end et the case is a transverse partition l between which and the farther end of the ease the dry cells 5 are placed. These cells are cylindrical, each having its ends metallic and connected with the respective poles thereof, one et' the ends having a contact lage.

In the end 7 of the :ase are preferably three spaced contacts 9 positioned 'to ince't the con* tact lugs (i of as many cells; and projectingl from the partition 4 are three helical springs l0 located similarly to the contacts 9. Between a contact 9 and its opposing spring- Alll, a battery cell 5 is placed by pressingl its base against the end oif the spring until the latter is salliciently compressed to permil the con tact lug (S to be brought down into terminal engagement with the contact i), with the cell lying upon the bottom of the case.

'll i springs l() are each seated in a hole l1 in the partition l` and rest against a false partition l2 kept in place by blocks ll at its ends, the partition beineV received in grooves 14: 'formed in the iront and back respectively of the case.

The Wiring: of the springs and contacts is as follows: The first contact9 relative Ato the, case-front, isconnected by a wire 15 with the second spring` l0; and the second Contact isv connected hy a wire 16 With the third spring. From the second spring a Wire 17 passes to a binding post 19, and from 'the irst spring 10 a Wire 20 joins with an endet` a resist-ance 2l. Moving over the resistance 21 is a switch arm Q2 pivoted at its inner end 23 to the partition el, and extending to the exterior of the case through a slot 2i shown in Fig., l. A wire "Z5 joins the switch arm with a binding; pest 2te.

-When the switch arin is positioned4 'as .shown in Fig. i2, that is, with its outeiigend nearest the ca,se-iront, it is ont of contact with any ol" the coils of the resistance; but as it is swung rearward it cornes into touch with one oit' the coils and then successivel cats ont more and more oft' the coils until it reaches the one directly connected with the wire 2O and so cats out all resistance.

l prefer to screw a cover 27 over the space embraced between the partition l and they nearer end et the ease, indicated in Figs. l and il, for the better protection oi the Wiring; aal to lay a false bottom 29 over the wires l5, 1li.

'.lhe operation is as follows: The three cells being; in place as hereinbeztore described, the terminals 30, 31 cit a cable connected with a sn'iall electric lamp 32, are put into engagementwitli the binding posts li), The switch arm 2;, is new moved along into engagement with the resistance 2l. causing the lamp tovbegin a slight glow, and is further advanced. until the lamp shines with its inaxiniun'i intensity.

is thus coupled up, the electriclanip 3Q; is actuated by one cell alone,-the. one next the -iircnt ci" the case,-the current passing from the cell through the spring; l@ in contact therewith, through the wire 2G, resistance 2l, switch arm Q2, wire 25, binding pest 26, terminal 3l, lamp 32, terminal 30., binding post 19, Wire 17, springA l0, Wire iti and centact 9, back. to the other pole 01"' the cell.

.ll'ence, since the light will moet naturally be connected up with the binding posts, and since but one cell is in circuit therewith, there can be no danger ol" burning' ont the smallest ones. lf a larger lamp is to be nsed, its terminal 3G- is removed. from the Mit) even 10i? binding post 19 and thrust into the tubular v end of the contact 9 oi the second cell. Cur- Arent now passes 'from said cell to said contact, thence through the terminal 30, the light 32, terminal 3l, binding post 26, wire 25, switch` arm resistance 221, wire 50, spring 10, the nearest cell 5, its contact the wire 15, .spring` l0, and back to the cell from which the current started.

It a. still stronger lamp is to be used. the terminal 30 is introduced into the conta 9 at the rear of the case, and in the same Inanner as just described, the current will be taken from all three cells, the switch. arm and resistance being in control. oiE cach et the three combinations.

in case the smaller isinips are used a iarge proportion ott the time, it is well to change the. front and rear cells aiter a time so that the more nearlj,7 exhausted iront one may be replacedby the less used rear one.

Supplied with this battery, a physician can ata moincnts notice bring into use any type of the small incandescent. bulbs which he may need ter the examination of his pa" tients throat, nasal passages and other portions of his internal organism, and which will be almost incapable of burning out the lamps, even of the smallest candle power.

What I claim is:

l. A battery comprising` a case having contacts adapted te receive dry cells in circuit with the contacts, a resistance in circuit with one of the contacts, a binding post, a switch arin cooperating with said resistance and in electric circuit with said binding post, a second binding post, electric connection between the second binding post and one of the. contacts not in circuit with thc resistance, and electric connection between the second-named contact and a i contact adapted to engage one pole ot' a cell whose other pole engages the first named contact, there being binding-post contact disposed to engage a pole ot a cell while the other pole is in engagement with, the second named contact.

2. A batter",T comprising a case adapted to receive a plurality et dry cells, a resistance, a contact in circuit with, said resistance, a switch arno movable in touch with said resistance, a binding post in circuit with said switch arin, a second contact, a second binding post in circuit with the second contact, a third contact, a fourth contact adapt ed to receive a drj7 ceii between it and the iirst contact and in circuit with both, a c0n nection .between the 'fourth contact and the second contact, a iiitth contact adapted to receive a dry cell between it and the second Contact and in circuit with beth, a connection betweenthe iiiith contact and the third contact, and a sixth contact adapted to re ceii'e a dry cell between it and the third.

contact, theiii'th and sixth contacts being each a binding post,

3. A battery comprising a case, a transverse parti ion near one end thereof, the partition haring` a plin'ality of holes through it, a second partition-in contact with the first partition and between it and the nearer end ot the case, a helical spring in each hole abutting against the second partition, a rheostat within the space included between 'the ser-ond partition and the nearer end oi. the case, binding posts supported by said end, a switch arin piroted to the partitions and externalt'y operative, wiring between one of said spring;y and the rheostat, a second ot' said springs and one et the binding posts and between the switch arm and the other binding post7 stationaryT contacts being` j` ro\f'ide ;l at the opposite end of the case between which contacts and said springs suitable dr)v cells can be introduced, and wiring between certain oi the contacts and an equal number of said springs.

In testimony vhat f e-iin the. foregoingl invention, I hare hereunto set my hand this 2li-th day oi? April, 1917.

FRANK BOWWER riliitTtl. 

